Motorola MC68302 User Manual page 99

BR
M68000
00
CORE
IPEND
IDBR
~
INDEPENDENT
IDBG
OMA
IMP
IBCLR
BUS
~
ARBITER
SDBG
SERIAL
~
OMA
1--E-
SDBR
MC68302
---------------
---
- - -I
--
BR
oo
r
BWi
r
EXTERNAL BUS
(iR &
ER) +CG
MASTER
ER • EXTERNAL BUS REQUEST
IR • INTERNAL BUS REQUEST (IDMA OR SOMA)
CG • CORE BUS GRANT
EG
=
EXTERNAL GRANT
IG
=
INTERNAL GRANT
ER&CG IDLE
=
BUS IDLE OR CORE CYCLE
Figure 3-9. IMP Bus Arbiter
3-52
MC68302 USER'S MANUAL MOTOROLA